August 2009 - OpenBIOS - mail.coreboot.org

starting
by G 3 Oct. 18, 2010

Oct. 18, 2010

I have begun doing work with OpenBIOS. I was wondering if it is possible to compile OpenBIOS for PowerPC on Mac OS X? If not, what Linux distro should I use? Any advice would really help.

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QEMU OpenBIOS booting?
by Steven Noonan May 24, 2010

May 24, 2010

Hi folks, I've been trying to use OpenBIOS with QEMU, and I've had trouble getting it to boot any PowerPC-based OS discs (Linux, Mac OS X, etc). OpenBIOS just doesn't seem to find anything bootable. If I try booting QEMU with -nographic, I get this output (I get the same with a self-built openbios-qemu.elf from the OpenBIOS SVN as well): ---- snip ---- >> ============================================================= >> OpenBIOS 1.0 [Apr 12 2009 00:55] >> Configuration device id QEMU version 1 machine id 1 >> CPUs: 1 >> Memory: 128M >> UUID: 00000000-0000-0000-0000-000000000000 >> CPU type PowerPC,970FX Welcome to OpenBIOS v1.0 built on Apr 12 2009 00:55 >> ELF - yaboot_startup: Entering boot, no path >> ELF - try_bootinfo: Trying hd:0,ppc\bootinfo.txt >> ELF - try_bootinfo: Can't open hd:0,ppc\bootinfo.txt >> ELF - try_path: Trying hd:2,\ofclient >> ELF - try_path: Can't open hd:2,\ofclient >> ELF - try_path: Trying hd:2,\yaboot conf=hd:2,\yaboot.conf >> ELF - try_path: Can't open hd:2,\yaboot >> *** Boot failure! No secondary bootloader specified *** ---- snip ---- Laurent Vivier suggested in this conversation in February (http://lists.openbios.org/pipermail/openbios/2009-February/003476.html) that there could be a bug in partition map decoding. Has such a bug been confirmed? I was trying to find the bug myself (I am an experienced C/C++ programmer), but the bug seems to be subtle, and my lack of familiarity with the code base doesn't help much. I've been trying to figure this out for 7 hours straight now... Any advice or other help would be much appreciated! - Steven

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r575 - in trunk/openbios-devel: forth/debugging modules
by svn＠openbios.org Aug. 30, 2009

Aug. 30, 2009

Author: laurent Date: 2009-08-31 01:39:55 +0200 (Mon, 31 Aug 2009) New Revision: 575 Modified: trunk/openbios-devel/forth/debugging/client.fs trunk/openbios-devel/modules/filesystems.c Log: Implement load method Modified: trunk/openbios-devel/forth/debugging/client.fs =================================================================== --- trunk/openbios-devel/forth/debugging/client.fs 2009-08-30 23:37:42 UTC (rev 574) +++ trunk/openbios-devel/forth/debugging/client.fs 2009-08-30 23:39:55 UTC (rev 575) @@ -17,10 +17,28 @@ \ 7.6.2 Program download and execute +variable file-size + +: !load-size file-size ! ; + +: load-size file-size @ ; + : load ( "{params}<cr>" -- ) + linefeed parse ( str len ) + open-dev ( ihandle ) + dup 0= if + drop + exit + then + dup >r + " load-base" evaluate swap ( load-base ihandle ) + dup ihandle>phandle " load" rot find-method ( xt 0|1 ) + if swap call-package !load-size else cr ." Cannot find load for this package" 2drop then + r> close-dev ; : go ( -- ) + ." go is not yet implemented" ; : state-valid ( -- a-addr ) Modified: trunk/openbios-devel/modules/filesystems.c =================================================================== --- trunk/openbios-devel/modules/filesystems.c 2009-08-30 23:37:42 UTC (rev 574) +++ trunk/openbios-devel/modules/filesystems.c 2009-08-30 23:39:55 UTC (rev 575) @@ -243,6 +243,31 @@ PUSH( (ucell)"unspecified"); } +/* ( addr -- size ) */ + +static void +files_load( files_info_t *mi) +{ + char *buf = (char*)POP(); + int ret, size; + + if (!mi->file) { + PUSH(0); + return; + } + + size = 0; + while(1) { + ret = mi->fs->read( mi->file, buf, 512 ); + if (ret != 512) + break; + buf += ret; + mi->filepos += ret; + size += ret; + } + PUSH( size ); +} + /* static method, ( ih -- flag? ) */ static void files_probe( files_info_t *dummy ) @@ -279,6 +304,7 @@ { "write", files_write }, { "seek", files_seek }, { "tell", files_tell }, + { "load", files_load }, { "block-size", files_block_size }, /* special */

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r574 - trunk/openbios-devel/modules
by svn＠openbios.org Aug. 30, 2009

Aug. 30, 2009

Author: laurent Date: 2009-08-31 01:37:42 +0200 (Mon, 31 Aug 2009) New Revision: 574 Modified: trunk/openbios-devel/modules/disk-label.c Log: Remove useless openSUSE hack. This hack was needed because we were using the IBM bootscript (ppc/bootinfo.txt) with an HFS+ filesystem (whereas bootscript was using ISO9660 partition number) The newworld_boot() function uses now the Apple bootscript (suseboot/os-chooser) with the correct partition number. Signed-off-by: Laurent Vivier <Laurent(a)vivier.eu> Modified: trunk/openbios-devel/modules/disk-label.c =================================================================== --- trunk/openbios-devel/modules/disk-label.c 2009-08-29 21:09:21 UTC (rev 573) +++ trunk/openbios-devel/modules/disk-label.c 2009-08-30 23:37:42 UTC (rev 574) @@ -93,37 +93,6 @@ } DPRINTF("filename %s\n", filename); - /* try to see if there is a filesystem without partition, - * like ISO9660. This is needed to boot openSUSE 11.1 CD - * which uses "boot &device;:1,\suseboot\yaboot.ibm" - * whereas HFS+ partition is #2 - */ - - if ( atol(path) == 1 ) { - PUSH_ih( my_self() ); - selfword("find-filesystem"); - ph = POP_ph(); - if( ph ) { - di->offs_hi = 0; - di->offs_lo = 0; - di->size_hi = 0; - di->size_lo = 0; - di->part_ih = 0; - di->type = -1; - di->block_size = 512; - xt = find_parent_method("block-size"); - if (xt) { - call_parent(xt); - di->block_size = POP(); - } - push_str( filename ); - PUSH_ph( ph ); - fword("interpose"); - success = 1; - goto out; - } - } - /* find partition handler */ seek_io( fd, 0 ); if( read_io(fd, block0, sizeof(block0)) != sizeof(block0) )

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Re: [OpenBIOS] [Qemu-devel] sparc memory/io mapping (and a milliseconds counter)
by Blue Swirl Aug. 30, 2009

Aug. 30, 2009

[added openbios(a)openbios.org to CC] On Sun, Aug 30, 2009 at 2:21 AM, Artyom Tarasenko<atar4qemu(a)googlemail.com> wrote: > is there a generic way to find out mapped device for a virtual > address? Or at least its physical address? > > ok see get-msecs > value get-msecs ( Parameter field: 7680000 ) > > ok 7680000 map? > Virtual : 0768.0000 > Context : @ 0.1ffc.0000 01ff.afc1 # 0 > Region : @ 0.1ffa.fc1c 0000.0000 Invalid > > ok 7680000 iomap? > Virtual : 0768.0000 is not a valid I/O address. You could try to uncomment DEBUG_MMU in helper.c and op_helper.c, maybe the MMU dump contains the address. > Looks like the address 0x7680000 is not mapped to anything, but the > call returns a value: > > ok get-msecs . > 0 > ok get-msecs . > 0 > > The value is obviously wrong, but the question is, where does it come > from? Is it a RAM or is it one of devices? Didn't see anything similar > in prtconf dumps. > > Another related question is, are there any known issues related to > milliseconds counter? > In the current OpenBIOS "get-msecs" call doesn't return anything at all. It's definition in forth/device/other.fs is simply: : get-msecs ( -- n ) ;

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Re: [OpenBIOS] r571 - in trunk/openbios-devel: arch/ppc/qemu forth/admin
by Alexander Graf Aug. 30, 2009

Aug. 30, 2009

On 29.08.2009, at 17:43, svn(a)openbios.org wrote: > Author: laurent > Date: 2009-08-29 17:43:00 +0200 (Sat, 29 Aug 2009) > New Revision: 571 > > Modified: > trunk/openbios-devel/arch/ppc/qemu/main.c > trunk/openbios-devel/forth/admin/nvram.fs > Log: > Replace yaboot_startup() by newworld_boot() which implements generic > CHRP boot method. > It finds the CHRP bootscript using the file attribute 'tbxi' and > the blessed directory. > > This method allows to boot easily Fedora (the bitness detection is > done > by the script and yaboot is called with the according yaboot.conf) but > openSUSE is broken (you have to use "boot cd:,\suseboot\yaboot") For the lazy readers, what's the reason it worked before but breaks now? Alex

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r573 - in trunk/openbios-devel: arch/ppc/qemu forth/admin
by svn＠openbios.org Aug. 29, 2009

Aug. 29, 2009

Author: laurent Date: 2009-08-29 23:09:21 +0200 (Sat, 29 Aug 2009) New Revision: 573 Modified: trunk/openbios-devel/arch/ppc/qemu/ofmem.c trunk/openbios-devel/forth/admin/nvram.fs Log: Define load-base to follow memory mapping defined in the BootX source comments. This as been reported by Steven Noonan. Modified: trunk/openbios-devel/arch/ppc/qemu/ofmem.c =================================================================== --- trunk/openbios-devel/arch/ppc/qemu/ofmem.c 2009-08-29 20:42:22 UTC (rev 572) +++ trunk/openbios-devel/arch/ppc/qemu/ofmem.c 2009-08-29 21:09:21 UTC (rev 573) @@ -30,10 +30,24 @@ extern void isi_exception( void ); extern void setup_mmu( ulong code_base ); +/* + * From Apple's BootX source comments: + * + * 96 MB map (currently unused - 4363357 tracks re-adoption) + * 00000000 - 00003FFF : Exception Vectors + * 00004000 - 03FFFFFF : Kernel Image, Boot Struct and Drivers (~64 MB) + * 04000000 - 04FFFFFF : File Load Area (16 MB) [80 MB] + * 05000000 - 053FFFFF : FS Cache (4 MB) [84 MB] + * 05400000 - 055FFFFF : Malloc Zone (2 MB) [86 MB] + * 05600000 - 057FFFFF : BootX Image (2 MB) [88 MB] + * 05800000 - 05FFFFFF : Unused/OF (8 MB) [96 MB] + * + */ + #define FREE_BASE 0x00004000 #define OF_CODE_START 0xfff00000UL #define IO_BASE 0x80000000 -#define OFMEM ((ofmem_t*)FREE_BASE) +#define OFMEM ((ofmem_t*)0x05400000) #define OF_MALLOC_BASE ((char*)OFMEM + ((sizeof(ofmem_t) + 3) & ~3)) @@ -78,7 +92,7 @@ ulong get_ram_bottom( void ) { - return (ulong)OF_MALLOC_BASE; + return (ulong)FREE_BASE; } static ucell get_heap_top( void ) Modified: trunk/openbios-devel/forth/admin/nvram.fs =================================================================== --- trunk/openbios-devel/forth/admin/nvram.fs 2009-08-29 20:42:22 UTC (rev 572) +++ trunk/openbios-devel/forth/admin/nvram.fs 2009-08-29 21:09:21 UTC (rev 573) @@ -334,7 +334,7 @@ " false" " real-mode?" bool-config " -1" " real-base" int-config " -1" " real-size" int-config -" 0x800000" " load-base" int-config +" 4000000" " load-base" int-config " -1" " virt-base" int-config " -1" " virt-size" int-config [THEN]

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r572 - trunk/openbios-devel/forth/bootstrap
by svn＠openbios.org Aug. 29, 2009

Aug. 29, 2009

Author: laurent Date: 2009-08-29 22:42:22 +0200 (Sat, 29 Aug 2009) New Revision: 572 Modified: trunk/openbios-devel/forth/bootstrap/bootstrap.fs Log: Implement "$=" to compare two strings (needed by BootX) Modified: trunk/openbios-devel/forth/bootstrap/bootstrap.fs =================================================================== --- trunk/openbios-devel/forth/bootstrap/bootstrap.fs 2009-08-29 15:43:00 UTC (rev 571) +++ trunk/openbios-devel/forth/bootstrap/bootstrap.fs 2009-08-29 20:42:22 UTC (rev 572) @@ -533,6 +533,20 @@ drop ; +\ compare two string + +: $= ( str1 len1 str2 len2 -- true|false ) + rot ( str1 str2 len2 len1 ) + over ( str1 str2 len2 len1 len2 ) + <> if ( str1 str2 len2 ) + 3drop + false + else ( str1 str2 len2 ) + comp + 0= + then +; + \ : +! tuck @ + swap ! ; : off false swap ! ; : on true swap ! ;

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Re: [OpenBIOS] r571 - in trunk/openbios-devel: arch/ppc/qemu forth/admin
by Stefan Reinauer Aug. 29, 2009

Aug. 29, 2009

svn(a)openbios.org wrote: > The MacOS bootloader (BootX) is also loaded automatically but forth > script is too complex to be executed correctly. > Where does it fail? Can you dump the script? Stefan

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r571 - in trunk/openbios-devel: arch/ppc/qemu forth/admin
by svn＠openbios.org Aug. 29, 2009

Aug. 29, 2009

Author: laurent Date: 2009-08-29 17:43:00 +0200 (Sat, 29 Aug 2009) New Revision: 571 Modified: trunk/openbios-devel/arch/ppc/qemu/main.c trunk/openbios-devel/forth/admin/nvram.fs Log: Replace yaboot_startup() by newworld_boot() which implements generic CHRP boot method. It finds the CHRP bootscript using the file attribute 'tbxi' and the blessed directory. This method allows to boot easily Fedora (the bitness detection is done by the script and yaboot is called with the according yaboot.conf) but openSUSE is broken (you have to use "boot cd:,\suseboot\yaboot") Debian works well (as usual...). The openSUSE needs the missing forth words: "load" and "go". The MacOS bootloader (BootX) is also loaded automatically but forth script is too complex to be executed correctly. Signed-off-by: Laurent Vivier <Laurent(a)vivier.eu> Modified: trunk/openbios-devel/arch/ppc/qemu/main.c =================================================================== --- trunk/openbios-devel/arch/ppc/qemu/main.c 2009-08-29 15:24:49 UTC (rev 570) +++ trunk/openbios-devel/arch/ppc/qemu/main.c 2009-08-29 15:43:00 UTC (rev 571) @@ -36,7 +36,7 @@ #endif #define CHRP_DPRINTF(fmt, args...) SUBSYS_DPRINTF("CHRP", fmt, ##args) #define ELF_DPRINTF(fmt, args...) SUBSYS_DPRINTF("ELF", fmt, ##args) -#define YABOOT_DPRINTF(fmt, args...) SUBSYS_DPRINTF("YABOOT", fmt, ##args) +#define NEWWORLD_DPRINTF(fmt, args...) SUBSYS_DPRINTF("NEWWORLD", fmt, ##args) static void transfer_control_to_elf( ulong elf_entry ) @@ -236,7 +236,7 @@ try_chrp_script(const char *of_path, const char *param, const char *script_path) { int fd, len, tag, taglen, script, scriptlen, entity; - char tagbuf[256], bootscript[256], c; + char tagbuf[256], bootscript[2048], c; char *device, *filename, *directory; int partition; @@ -244,6 +244,8 @@ partition = get_partition(of_path); filename = get_filename(of_path, &directory); + CHRP_DPRINTF("device %s partition %d filename %s\n", device, partition, filename); + /* read boot script */ if (partition == -1) @@ -378,13 +380,10 @@ } static void -yaboot_startup( void ) +newworld_boot( void ) { - static const char * const chrp_paths[] = { "ppc\\bootinfo.txt", "System\\Library\\CoreServices\\BootX" }; - static const char * const elf_paths[] = { "hd:2,\\ofclient", "hd:2,\\yaboot" }; - static const char * const args[] = { "", "conf=hd:2,\\yaboot.conf" }; + static const char * const chrp_path = "\\\\:tbxi" ; char *path = pop_fstr_copy(), *param; - int i; param = strchr(path, ' '); if (param) { @@ -393,7 +392,7 @@ } if (!path) { - YABOOT_DPRINTF("Entering boot, no path\n"); + NEWWORLD_DPRINTF("Entering boot, no path\n"); push_str("boot-device"); push_str("/options"); fword("(find-dev)"); @@ -415,9 +414,7 @@ param = pop_fstr_copy(); } try_path(path, param); - for( i=0; i < sizeof(chrp_paths) / sizeof(chrp_paths[0]); i++ ) { - try_chrp_script(path, param, chrp_paths[i]); - } + try_chrp_script(path, param, chrp_path); } else { uint16_t boot_device = fw_cfg_read_i16(FW_CFG_BOOT_DEVICE); switch (boot_device) { @@ -429,20 +426,13 @@ path = strdup("cd:"); break; } - for( i=0; i < sizeof(chrp_paths) / sizeof(chrp_paths[0]); i++ ) { - try_chrp_script(path, param, chrp_paths[i]); - } + try_chrp_script(path, param, chrp_path); } } else { - YABOOT_DPRINTF("Entering boot, path %s\n", path); + NEWWORLD_DPRINTF("Entering boot, path %s\n", path); try_path(path, param); - for( i=0; i < sizeof(chrp_paths) / sizeof(chrp_paths[0]); i++ ) { - try_chrp_script(path, param, chrp_paths[i]); - } + try_chrp_script(path, param, chrp_path); } - for( i=0; i < sizeof(elf_paths) / sizeof(elf_paths[0]); i++ ) { - try_path(elf_paths[i], args[i]); - } printk("*** Boot failure! No secondary bootloader specified ***\n"); } @@ -487,5 +477,5 @@ if (boot_device == 'c') { oldworld_boot(); } - yaboot_startup(); + newworld_boot(); } Modified: trunk/openbios-devel/forth/admin/nvram.fs =================================================================== --- trunk/openbios-devel/forth/admin/nvram.fs 2009-08-29 15:24:49 UTC (rev 570) +++ trunk/openbios-devel/forth/admin/nvram.fs 2009-08-29 15:43:00 UTC (rev 571) @@ -365,3 +365,7 @@ \ defers ['] fcode-debug? to _fcode-debug? ['] diag-switch? to _diag-switch? + +: release-load-area + drop +;

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